Milk-strainer.



Wm. fifil,476. Patented NOV. 6. I900. H. D. MACK.

MILK STRAINER.

(Application filed Feb. 3, 1900.)

(No Model.)

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No. 661,476. Patented Nov. 6, I900. H. D-. MACK. MILK STBAINER.Myglieation flied Feb. '3, 1900.)

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HEMAN D. MACK, OF BRIGHTON, NEW YORK, ASSIGNOR OF ONE-HALF TO ELIAS E.HALE, OF SAME PLACE.

ll/llLK STRAINER.

SPECIFICATION forming part of Letters Patent No. (561,176, datedNovember 6, 1900.

Application filed February 3,1900. serial No. 3,861. (No model.)

To all whom, it may concern:

Be it known that I, HEMAN D. MACK, of Brighton, in the county of Monroeand State of New York,have invented a new and usefullmprovement inMilk-Strainers, which improvement is fully set forth in the followingspecification and shown in the accompanying drawings.

My invention is a milk-strainer consisting of various detachable andremovable parts, the same being hereinafter fully described, and moreparticularly pointed out in the claims.

Referring to the drawings, Figure 1 is a front elevation of the device,parts being shown in two positions by full and dotted lines. Fig. 2 is aside elevation, seen as indicated by arrow 2 in Fig. 1. Fig. 3 is a Viewfrom over the device. Fig. 4 shows the primary strainer detached. Fig. 5is a plan of the outer vessel with the primary strainer omitted. Fig. 6shows the interior of the outer vessel with the primary strainer and thescrew-cap of the inner strainer omitted, a part of the base'strainerbeing broken away. Fig. 7 is an axial section of the parts, taken on thedotted line 7 7 in Fig. 3. Fig. 8 is a side elevation of parts beneaththe main outer vessel, seen in the direction in which Fig. 2 is seen,parts being vertically and centrally sectioned, the stop-lever andspring-holder being sectioned, as on the dotted line Sin Fig. 9. Fig. 9is a side elevation of some of the lower parts of the device, seen asindicated by arrow 9 in Fig. 8. Fig. 10 is an edge view of the lever andassociated parts, seen as indicated by arrow 10 in Fig. 9, thespring-holder being shown in two positions by full and dotted lines.Fig. 11 is a side elevation of the base-strainer with the screwcapresting thereon, the adjacent part of the outer vessel being verticallysectioned. Fig. 12 is a side elevation of the inner conical strainerwith the screw-cap removed, adjacent parts of the outer vessel beingvertically sectioned. Fig. 13 is a vertical section of a part of theprimary strainer through one of the openings and a strainer-section.Fig. 1% shows the friction tension for the stop-lever, the f ulcrun1-barbeing transversely sectioned on the dotted line 14: in Fig. 1.

Figs. 1 to 6, inclusive, and Fig. 14 are drawn to a scale aboutone-sixth full size; Figs. 7, ll, 12,- and 13 to a scale something lessthat one-half size; the remaining figures being drawn full size.

A is the outer or main vessel, open at the top, and B an inner vessel orprimary strainer, both preferably made of sheet metal.

0 is an inner base-strainer, cylindrical in form, and D a centralconical strainer Within the base-strainer O.

E is a tapered or conical dischargedube for the strained milk, securedcentrally beneath the main vessel A, and a is a tapered stopper seatedin the tube E to control the passage through it.

Gis an iron band or ring encircling the outer vessel A to support it andother parts, the band being secured rigidly to a wooden holder orsupport H, the latter being held by simple means to a wall I, a post, orother convenient fixed part or body.

K is a shipping-can, or it may be other vessel, large or small, restingupon the floor L to receive the milk from the strainer.

F, Figs. 1, 3, and 9, is a hand-lever for controlling the stopper ct,Fig. 8, fulcrumed upon a bar b, secured to a hanger c, pending from theiron band G.

The main vesselA consists of a cylindrical part d, Fig. 7, and a conicalpart c, it having a straight bottom f, with opening at the center. Atits upper edge this vessel is formed with a projecting roll or bead g torest upon the supporting-band G, the latter having a rearward projection72 Figs. 2 and 3, where it meets the support H. This support ispreferably made in the form of a cross, consisting of a main verticalmember In and a cross-bar t, the support being secured to the wall, asby means of a loop Z, passed over a stud or screw m in the wall. Theband G is stiffened in its position by means of braces 7H1, secured tothe member t' of the support H.

The inner vessel or primary strainer B is supported by means of aprojecting head 0 at its upper edge, resting upon the head 9 of thevessel A. This inner vessel is made up of a cylindrical part 19, Fig. 7,adownwardlyprojecting conical part 1', (see also Fig. 3,) and anupwardly-projecting conical bottom 8. The conical part 0' is formed withopenings u, Figs. 3, 4, and .13, and provided with perforated sheets 15to cover said openings, through which perforations the milk-turned intothe vessel B first passes in the operation of straining. Between theinclined or conical parts 0" and s is formed a circular depressed partor valley u, Figs. 3, 7, and 13, into which the sediment or extraneousmatter in the milk settles, as indicated. The lower edges of theopenings to being some distance above the bottom of the valley, thesediment settles below the openings and is not caused to lodge againstthe strainerst and be carried through them, the milk flowing through thestrainers as it is turned into the vessel B passing over the collectedsediment. When sediment thus collects in the vessel B, the latter may bereadily removed from the outer vessel A and freed from the matter orcleansed before more milk is turned in. This is believed to beimportant,as if the sediment is allowed to remain long in place and be washed bythe intiowing milk certain parts of it are liable to become com minutedor dissolved and so be carried through the strainers with the flowingmilk.

There is space below the vessel B, Figs. '7 and 11, in which is placedthe base-strainer C, cylindrical in form, as shown. This strainerconsists of a base-ring Q), to rest on the bottom f of the vessel A, andan upper flanged ring to, equal in diameter with the ring '21, and aperforated band 00, connecting the rings 1) and 10, through which themilk flows inwardly after passing the vessel B. Within the base-strainerO the central conical strainer D rests, Figs. 7 and 12, screw threadedat its lower end onto an upwardlyprojecting threaded rim y of the vesselA. This central strainer comprises alower broad band a and a separateupper flanged band a of larger diameter, joined by inclined crosstiepieces b, to which are secured conical sections 0 of wire-cloth to coverthe openings between the tie-pieces and the bands. The milk in flowingthrough the device passes obliquely upward through the sections ofwire-cloth c and so on downward through the discharge-pipe E, asindicated.

The horizontal flange d, Figs. 6 and 7, of the band (b is formed with anupwardlyturned threaded part e, upon which is placed a screw-cap f inposition to bear upon the flange g of the base-strainer O. A space 7Lbeing left between said opposing flanges, the upper one yields when thescrew-cap is turned down against it, causing the base-strainer to bearagainst the bottom platef of the vessel A with a yielding pressure. Thescrew-cap f thus serves to hold the base-strainer in place, and whenremoved the base-strainer may be taken out of the vessel A. The openingthrough the part 6 of the central strainer D being large allows readyaccess to the interior of said strainer for the purpose of cleaning, thestrainer being also removable by unscrewing it from the flange or ringg.

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It will be observed that all of the perforatedstrainers t, 00, and c areeither vertical or inclined, there being no horizontal strainers. Alsoit will be observed that in every case there is space or a depressedpart below the lower edge of every strainer for the reception' ofsediment, this being for the purpose of keeping the latter away from theperforations. In case milk-strainers are so 0011- structed that solublemasses of extraneous matter are held by gravity against the perforatedparts such masses are tumbled and abraded by the successive inpouring ofmilk, thus becoming reduced or dissolved and carried onward in the milkas it flows from the strainer. This objection in constructing my presentinvention I have studiously aimed to avoid. As shown in Figs. 7, 11, and12, extraneous matter that may reach the bottom of the outer vessel A inany case is held in the space 25 below the perforated part m or theperforated sheets 0 in case any passes through the former sheet or incase at any time the base-strainer C may be temporarily unused.

It is sometimes desirable to'dispense with either the vessel 13 or thebase-strainer Oas, for instance, when the milk poured into the device iscomparatively free from extraneous matter. The parts B, C, and D, whenall are used, constitute a progressive series of strainers, sifting fromthe milk substantially all the contained impurities not held insolution.

The hand-lever F is connected with the stopper a by means of a bent rod'i', which at one end passes centrally through the stopper and at theother end is flattened to enter between jaws 7c of the lever. At thestopper the rod is threaded and provided with opposing screw-nuts Z Z,washers m m being inserted between the screw-nuts and the stop- By meansof this arrangement the stopper may be vertically adjusted upon the rod.The lever and the rod 7; are pivotally connected by means of apin n,rigid in a springbar 0, held at p rigid with the lever. By drawing thespring and the pin back, as indicated in Fig. 10, the stopper may beremoved for the purpose of cleansing or renewal. The hanger c is formedwith a vertical slot 1', Figs. 1 and 2, near its lower end, in whichrests a bent guide s for the lever F. This guide serves to. hold thelever against the hanger, and being vertically adjustable in.

the slot is adapted to act as a stop for the upward motions of the leverto prevent the tapered stopper being drawn too tightly into its taperedseat in the outflow-pipe E. The fulcrum-pin 1), Figs. 1 and 11, of thelever F is provided with a simple spring to under the screw-nut w togive the lever an adjustable friction tension. By this means the levermay be controlled to hold the stopper a at any desired position in thepipe E to control the outflowing stream of milk. If, for instance, themilk to be strained in any case carry an unusual quantity of extraneousmatter, it is desirable to have it flow moderately or even sluggishlythrough the strainers to prevent carrying objectionable matter with it,as would be the case if it flowed rapidly through them. By holding thestopper (L in a position to partially close the passage through thedischarge-pipe E the rate of the flow of milk may be reduced orregulated at pleasure. The construction of the parts is such that thecapacity of the pipe E, when unobstructed by the stopper, is less thanthe capacity of the combined perforations in either strainer B, C, or D.

This milk-strainer is designed to be made of such size that pailfuls ofinilk may be turned into it in moderately rapid succession, and when acan K is filled the outflowing stream may be instantly shut off by meansof the hand-lever and the filled can replaced by an empty one.

What I claim as my invention is- 1. A milk-strainer comprising an outeror main open vessel with an opening at the bottom, a removable vesselsupported within the outer vessel and consisting of a cylindrical part,a downwardly-projecting conical part, and an upwardly-projecting centralimperforate conical part, said downwardly-projecting part havingopenings through it above the junction of the two conical parts to forma sediment-dam, and perforated sheets to cover said openings,substantially as shown and described.

2. A milk-strainer comprising a straining vessel having perforatedsections or areas near the bottom, the bottom of the vessel beingimperforate and elevated at the middle, with a valley adjacent to andbelow the apex of the bottom to form a sediment-dam below the perforatedsections, and an inclosing vessel for said straining vessel,substantially as and for the purpose set forth.

3. A milk-strainer comprisinga vessel open at the top and havingimperforate bottom elevated at the center with a valley adjacent to theouter edge, perforated sections interme diate said bottom and the outerwalls of the vessel otherwise than horizontal, a strainer beneath thesame having imperforate top, vertical perforated portions, and astrainer Within the same having inclined perforated sections, allsubstantially as shown and described.

In witness whereof I have hereunto set my hand, this 30th day ofJanuary, 1900, in the presence of two subscribing Witnesses.

HEMAN D. MACK.

Witnesses:

E. B. WHITMORE, M. L. WINs'roN.

